68128025 has 12 divisors (see below), whose sum is σ = 96547392. Its totient is φ = 46716240.

The previous prime is 68128003. The next prime is 68128031. The reversal of 68128025 is 52082186.

It is not a de Polignac number, because 68128025 - 2¹⁰ = 68127001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68127982 and 68128000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194477 + ... + 194826.

It is an arithmetic number, because the mean of its divisors is an integer number (8045616).

Almost surely, 2^68128025 is an apocalyptic number.

It is an amenable number.

68128025 is a deficient number, since it is larger than the sum of its proper divisors (28419367).

68128025 is a wasteful number, since it uses less digits than its factorization.

68128025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389320 (or 389315 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 68128025 is about 8253.9702567916. The cubic root of 68128025 is about 408.4215034741.

The spelling of 68128025 in words is "sixty-eight million, one hundred twenty-eight thousand, twenty-five".